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This is not supported by the literature as far as I'm aware, do you have a source? Propofol, the most common adult surgical anesthetic, decreases neuronal activity via the mechanism of making it harder for action potentials to fire [0], and has a litany of effects few of which are excitatory , and generally correlated to decreasing cortical activity [1].

And ketamine, the most common pediatric and veterinary anesthetic, has a complex mechanism of action acting on GABA, NMDA, and other receptor systems, often with generally inhibitory characteristics [2] and with definite decrease in brain activity in animal models [3].

[0] https://www.ncbi.nlm.nih.gov/books/NBK430884/

[1] https://elifesciences.org/articles/60824#:~:text=The%20broad....

[2] https://journals.lww.com/anesthesia-analgesia/Fulltext/1998/...

[3] https://www.sciencedirect.com/science/article/abs/pii/002839...

That sounds really interesting and I have not heard of this before, where would you suggest to start reading into surgical sedatives?

That sounds like it would scramble your brain long-term.